If there is a problem here it may be helpful to check /etc/ld.so.conf to
ensure it contains /usr/local/lib, and also to run ldconfig -p to
double-check that the python webkit library is listed. Also consider doing
ldd /usr/local/lib/libwebkitgtk-python-1.0.so.0 and double-check that the
library can find all its runtime libs.